BMW 16111184218 Plastic Fuel Tank With Filler Pipe

The passenger compartment of the vehicle serves as the fuel tank location beneath the trunk or rear seat space and the E30 and E36 models use split-tank design to clear space for driveshafts. The jet action pump enables fuel transfer to the fuel pump side from one section but the fuel pressure regulator returns fuel from the left section through an orifice causing a venturi effect so a mechanical fuel pump becomes unnecessary. The procedure for removing the tank includes using a suitable device for tank drainage followed by rear axle assembly removal and possibly ejecting the carbon canister. Use tool No. 161040 as an equivalent to disconnect the fuel tank ventilation line while also unplugging the fuel feed and return lines. Then disconnect the ground strap. Begin by supporting the tank then take out the fasteners on the clamping straps at the rear side followed by the single fastener at the front attachment point and its support washer. The decrease in tank position by 2-4 inches allows operators to disconnect the fuel level sensor electric connector while they extract all fuel lines and clamps and electrical connectors before slowly lowering the tank. The installation process requires starting by undoing removal steps then placing fuel clamps back while properly installing all hose connections and electrical connectors and their routes. Beginning the vehicle operation must wait until fuel is added to the tank because operating an empty fuel tank risks harming the fuel pump system.